I wouldn't get a monitor that doesn't have dvi or DP, personally. Also the Asus is smaller, both were 1080P? I didn't look at the refresh rates on both, but if you're looking at a single monitor I'd probably go with at least a 27"
I have 5 of these:
https://www.amazon.com/gp/product/B005BZNDS0/ref=oh_aui_search_detailpage?ie=UTF8&psc=1
They aren't all hooked up to this PC (yet).
Complaints: the input is auto-switching, so if you hook up like 2 pcs to the same monitor, if one reboots it will auto switch to the other input (annoying), no DP or speakers but it does have a 3.5mm out if you have audio coming in from the HDMI (can just use speakers then from that).
It all depends on what you're going to be doing on it, if it's for "work" I'd say the more monitors the better, older games: probably just 1 screen, current games, not sure but I don't know of many (actually personally I know of none) that can support multiple displays. I know refresh rate should be paid attention to, luminance, and also ratings for burn in, because that can be an issue.
I mean if you're keeping it under 30" and just doing 1080P I wouldn't spend more than $300, if it's under 27" more than $150, but I'm cheap, even though Asus is great.